I actually appreciated many of the comments posted in reply, because I'm sure I'm not the only one who thought both cars CAN be compared to each other. Perhaps some have even gone onto the extended CTS-V test drives that GM offered down in the US.

Finally, maybe this thread is a sanity check, to make sure that I'm not a total idiot to even contemplate such a move. Looks like, maybe no nuthouse for me just yet....

I don't think that you followed me on the second part. I agree with what you said above and cross shopping these cars makes sense. But what I was getting at is that you obviously aren't in love with the idea of the swap. If you're making a thread like this (i.e. REALLY on the fence), that's a BIG sign not to do it IMO. People always say to go with your intuition/heart/first inclination and none of those seem strong regarding this swap so my vote is no.